Talking Sam is a natural language processing computer program in the same style as
Eliza, although Sam is a bit mean.
From software welcome page:
You can say anything you like to Sam and he will try to respond in an intelligent way. Sometimes he will change the subject to one his choosing or he might ask you about something you said earlier.
Sam can use the SAM Reciter (loaded in to high or low memory) to perform text to speech (included in the D64 image). Sam's voice suits his attitude.